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Subject (Topic)
- Water-supply--West (U.S.)2
- Geology --Nevada --Pyramid Lake1
- Geysers--Wyoming--Pictorial works1
- Geysers--Yellowstone National Park1
- Hot springs--Wyoming1
- Mineral industries --Nevada --Pictorial works1
- Mining camps--West (U.S.) --Pictorial works1
- Moraines--Colorado1
- Mountains--Utah1
- Quartz mines and mining--Nevada1
- Reservoirs--Colorado1
- Reservoirs--West (U.S.)1
- Rocks, Carbonate --Nevada --Pyramid Lake1
- Silver mines and mining --Nevada1
- Water-supply--Colorado1